A wax model automatic sand covering device

Abstract

The present application relates to the technical field of precision casting, and discloses an automatic sand coating device for wax models, which comprises a storage mechanism for storing wax models, a sizing mechanism for sizing the wax models, a sand coating mechanism for coating the surface of the wax models with sand, and a transfer robot; the transfer robot can transfer the wax models between the storage mechanism, the sizing mechanism, and the sand coating mechanism; the sand coating mechanism comprises a mounting box arranged on the ground, a filter screen is arranged above the mounting box, a floating sand box for storing sand is arranged on a side of the filter screen away from the mounting box, a accommodating hole is opened on a side of the floating sand box away from the filter screen, an air intake assembly for intake into the mounting box and a feeding assembly for conveying sand into the floating sand box are arranged on one side of the mounting box, and an exhaust assembly is arranged above the floating sand box. The present application has the effect of improving the efficiency of sand coating of wax models.

Description

Technical Field

[0001] The present application relates to the technical field of precision casting, and in particular to an automatic sand covering device for wax molds. Background Art

[0002] Casting is a manufacturing method in which liquid metal is poured into a mold of a specific shape and then cooled and solidified to obtain a blank part or a finished product.

[0003] The wax pattern is a key component in casting, used to form the model of the casting cavity. Before placing the wax pattern in the sand mold, the surface of the wax pattern needs to be coated with sand.

[0004] The existing wax model wrapping sand process requires the wax model to be dipped in slurry first, and then sand is sprinkled on the wax model manually to make the sand adhere to the sand model. The wax model dipping slurry and sanding actions are repeated until the surface of the wax model is covered with a certain thickness of sand layer before the wax model can be placed in the mold. Summary of the invention

[0005] In order to improve the slow efficiency of sand coating on wax molds, the present application provides an automatic sand coating device for wax molds.

[0006] The present application provides an automatic wax model sand covering device, which adopts the following technical solution:

[0007] A wax model automatic sand coating device comprises a storage mechanism for storing wax models, a sizing mechanism for sizing the wax models, a sand coating mechanism for coating the surface of the wax models with sand, and a transfer robot; the transfer robot can transfer the wax models between the storage mechanism, the sizing mechanism, and the sand coating mechanism; the sand coating mechanism comprises a mounting box arranged on the ground, a filter screen is arranged above the mounting box, a floating sand box for storing sand is arranged on a side of the filter screen away from the mounting box, a accommodating hole is opened on a side of the floating sand box away from the filter screen, an air intake assembly for intake of air into the mounting box and a feeding assembly for conveying sand into the floating sand box are arranged on one side of the mounting box, and an exhaust assembly is arranged above the floating sand box.

[0008] By adopting the above technical scheme, first, the transfer robot moves the wax model from the storage mechanism to the sizing mechanism, so that the slurry adheres to the surface of the wax model. Secondly, the transfer robot moves the wax model from the sizing mechanism to the sand wrapping mechanism, so that the sand wrapping mechanism wraps the surface of the wax model with sand. During the sand wrapping process, when the wax model with slurry adhered to it moves from the sizing mechanism to the top of the floating sand box, the air intake component transports air into the installation box to lift the filter net, so that the sand contacts the slurry and adheres to the surface of the wax model; when the sand in the floating sand box is less, new sand is transported into the floating sand box through the feeding component to replenish the sand; the air extraction component collects the lifted sand.

[0009] Optionally, the vacuum assembly includes a first mounting plate and a second mounting plate arranged above the floating sand box, the first mounting plate is located on the side of the accommodating hole away from the transfer robot, the second mounting plate is located on the side of the accommodating hole away from the sizing mechanism, a first mounting cover is arranged on the side of the first mounting plate away from the axis of the accommodating hole, a first mounting hole connected to the first mounting cover is opened on the side of the first mounting plate facing the axis of the accommodating hole, and a first vacuum pipe is arranged above the first mounting cover; a second mounting cover is arranged on the side of the second mounting plate away from the axis of the accommodating hole, a second mounting hole connected to the second mounting cover is opened on the side of the second mounting plate facing the axis of the accommodating hole, and a second vacuum pipe is arranged above the second mounting cover.

[0010] By adopting the above technical solution, the first exhaust pipe exhausts air from the inside of the first mounting cover, so that the raised sand enters the first mounting cover and is transported to the collection box for collecting sand; similarly, the second exhaust pipe exhausts air from the inside of the second mounting cover, so that the raised sand enters the second mounting cover and is transported to the collection box for collecting sand; the design of the first mounting cover and the second mounting cover can perform exhaust action in two horizontal directions above the floating sand box, thereby increasing the exhaust area and improving the exhaust effect.

[0011] Optionally, the floating sand box is provided with a material blocking mechanism for blocking sand, and the material blocking mechanism includes a first baffle plate provided on the side of the floating sand box facing the transfer robot and a second baffle plate provided on the side of the floating sand box facing the sizing mechanism, the first baffle plate is fixedly connected to the second baffle plate, and the mounting box is provided with a vertical displacement component for driving the first baffle to rise and fall.

[0012] By adopting the above technical solution, the vertical displacement component drives the first baffle and the second baffle to rise together. When the air intake component transports air into the installation box to lift the filter net, the sand falling to the outside of the floating sand box is reduced, thereby reducing the sand content in the air of the production workshop and reducing the amount of sand inhaled into the nasal cavity of the staff.

[0013] Optionally, the vacuum assembly also includes a top plate arranged above the first mounting plate, the vertical displacement assembly includes a first rack arranged below the first baffle, a second rack arranged below the second baffle, a first operating plate and a second operating plate arranged above the mounting box, the first operating plate is perpendicular to the second operating plate, the first operating plate is rotatably connected to a first rotating rod toward one side of the floating sand box, a first gear and a first bevel gear are connected to the outer shell of the first rotating rod, the second operating plate is rotatably connected to a second rotating rod toward one side of the floating sand box, a second gear and a second bevel gear are connected to the outer shell of the second rotating rod, the first bevel gear and the second bevel gear are meshed with each other, the first gear and the first rack are meshed with each other, and the first operating plate is provided with a rotating motor for driving the first rotating rod to rotate.

[0014] By adopting the above technical solution, the rotating motor drives the first rotating rod, the first gear and the first bevel gear to rotate, the first gear drives the first rack and the first baffle to rise, the first bevel gear drives the second bevel gear to rotate, and the second gear also drives the second rack and the second baffle to rise; conversely, the rotating motor can drive the first baffle and the second baffle to descend.

[0015] Optionally, a first locking plate is rotatably connected to the bottom of the top plate, a first locking strip is provided on the end surface of the first locking plate facing the first mounting plate, and a first locking block is provided on the side of the first baffle away from the first mounting plate; when the sand wrapping mechanism is not working, the first locking strip is not on the path of the first locking block moving in the vertical direction; when the first locking block is at the highest point, the rotation of the first locking plate can enable the first locking strip to move to the bottom of the first locking block.

[0016] By adopting the above technical scheme, after the first baffle and the second baffle are raised to the highest point, when the air extraction component is working, the sand and air above the floating sand box are extracted to reduce the air pressure in the area above the floating sand box, and the air pressure on the side of the first baffle close to the first mounting plate is lower than the air pressure on the side of the first baffle away from the first mounting plate. The outside air drives the first baffle to rotate toward the first mounting plate, so that the first locking strip moves to the bottom of the first locking block, so that the first baffle is not easy to fall when the sand wrapping mechanism is working. Similarly, the second locking strip moves to the bottom of the second locking block, so that the second baffle is not easy to fall when the sand wrapping mechanism is working. After the air extraction component stops working, the first locking plate and the first locking strip rotate and reset by their own gravity, so that the first locking strip is no longer under the first locking block. Similarly, the second locking plate and the second locking strip are reset by their own gravity, so that the second locking strip is no longer under the second locking block. The vertical displacement component can drive the first baffle and the second baffle to descend and reset; the negative pressure generated by the operation of the air extraction component is used for the locking action, and no additional driving source for driving the first locking plate / the second locking plate to rotate is required, which saves energy.

[0017] Optionally, the feeding assembly includes a tank body set on the ground, a accommodating cavity is opened in the tank body, a feeding pipe is arranged on the top of the tank body, a feeding hole connected with the accommodating cavity is opened on the side of the feeding pipe away from the tank body, a feeding hopper is arranged on the end of the feeding pipe away from the tank body, a valve for opening and closing the feeding hole is arranged on the feeding pipe, a gas filling device for adding gas to the tank body is arranged on the tank body, a transport pipe is arranged on the tank body, and a through hole for the transport pipe to pass through is opened on the first mounting plate.

[0018] By adopting the above technical solution, when the valve is opened, the sand in the feed hopper can enter the containing chamber; when the valve is opened, the sand in the feed hopper can no longer enter the containing chamber. At this time, the aeration equipment adds air to the containing chamber, and the sand in the containing chamber can be transported to the transport pipe and then enter the floating sand box.

[0019] Optionally, the sizing mechanism includes a base, a sizing cylinder is rotatably connected above the base, and a rotating component for driving the sizing cylinder to rotate and a stirring blade inserted into the sizing cylinder are provided on the base.

[0020] By adopting the above technical solution, the rotating component drives the sizing cylinder to rotate, and the sizing cylinder drives the internal slurry to rotate. Since the stirring blade is fixed, the sizing cylinder cooperates with the stirring blade so that the moving slurry is blocked by the stirring blade, thereby realizing the stirring action of the stirring blade on the slurry.

[0021] Optionally, a storage cavity is provided in the base, a first circular hole and a second circular hole communicating with the storage cavity are provided on the upper end surface of the base, a rotating shaft inserted into the first circular hole is provided on the end surface of the sizing cylinder facing the base, the rotating assembly includes a driven gear sleeved on the outside of the rotating shaft, a mounting seat arranged above the base, and a circular shaft rotatably connected to the second circular hole, a driven wheel located above the base and a driving gear located in the storage cavity are sleeved on the circular shaft outer shell, the driving gear and the driven gear are meshed with each other, a rotating motor is provided on the mounting seat, a driving wheel is sleeved on the output shaft of the rotating motor, and a conveyor belt is sleeved on the driving wheel and the driven wheel outer shells.

[0022] By adopting the above technical solution, the rotating motor drives the driving wheel to rotate, and the driving wheel drives the driven wheel, the circular shaft and the driving gear to rotate through the transmission belt. Since the driving gear is engaged with the driven gear, the driving gear drives the driven gear and the sizing cylinder to rotate.

[0023] Optionally, the base is provided with a lifting component for driving the stirring blade to lift and lower, and the lifting component includes a fixing column arranged on the base, the upper end surface of the fixing column is provided with a threaded hole, and a fixing rod is threadedly connected to the threaded hole, and a guide groove is provided on the outer circumferential surface of the fixing column, and the guide groove passes through the fixing column in a vertical direction, and a fixing cylinder is provided outside the fixing column, and a fixing groove for inserting the fixing column is provided below the fixing cylinder, and a guide block slidably arranged in the guide groove is provided on the inner wall of the fixing groove, and a fixing hole for the fixing rod to pass through is provided on the bottom wall of the fixing groove, and a fixing ring block that can interfere with the bottom wall of the fixing groove is fixedly connected to the outer circumferential surface of the fixing rod, and the stirring blade is fixedly connected to the outer circumferential surface of the fixing cylinder, and a hand wheel is provided on the upper end surface of the fixing rod.

[0024] By adopting the above technical solution, since the guide block is in the guide groove and is restricted by the inner wall of the guide groove, the fixed cylinder can only move in the vertical direction; the hand wheel is driven to rotate, the hand wheel drives the fixed rod to rotate, so that the fixed rod and the fixed ring block rise, and the fixed ring block drives the fixed cylinder and the stirring blade to rise, and vice versa, the hand wheel is driven to rotate in the opposite direction, the hand wheel drives the fixed rod to rotate, so that the fixed rod and the fixed ring block descend, that is, the fixed cylinder and the stirring blade are lowered, and the height adjustment of the stirring blade is realized.

[0025] Optionally, a folding tube is provided on the outer sleeve of the fixing column, one side of the folding tube is connected to the base, and the other end of the folding tube is connected to the fixing tube.

[0026] By adopting the above technical scheme, the folding tube has a sealing effect, preventing sand and other foreign matter from entering between the fixed tube and the fixed column; when the fixed rod rotates and descends, the fixed ring block descends. Since the fixed tube is supported by the fixed ring block, the fixed ring block descends, causing the fixed tube to descend, so that the fixed tube drives the folding tube to fold; conversely, the fixed rod rotates and rises, causing the fixed ring block to rise, and the fixed ring block drives the fixed tube to rise, so that the folding tube unfolds; when sand and other foreign matter are stuck on the folding tube, the above action can loosen the foreign matter and make the foreign matter detach from the folding tube.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. First, the transfer robot moves the wax model from the storage mechanism to the sizing mechanism, so that the slurry adheres to the surface of the wax model. Secondly, the transfer robot moves the wax model from the sizing mechanism to the sand wrapping mechanism, so that the sand wrapping mechanism wraps the surface of the wax model with sand. During the sand wrapping process, when the wax model with slurry adhered to it moves from the sizing mechanism to the top of the floating sand box, the air intake component transports air into the installation box to lift the filter net, so that the sand contacts the slurry and adheres to the surface of the wax model; when there is less sand in the floating sand box, new sand is transported into the floating sand box through the feeding component to replenish the sand; the air extraction component collects the sand that is lifted;

[0029] 2. The air extraction assembly reduces the air pressure above the floating sand box, so that the outside air drives the first locking plate to rotate, so that the first locking strip and the first locking block cooperate to lock the first baffle, and there is no need to set a separate driving source for the first locking plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1It is a schematic diagram of the structure of an embodiment of the present application;

[0032] Figure 2 yes Figure 1 A magnified schematic diagram of part A;

[0033] Figure 3 is a side view of the sizing mechanism;

[0034] Figure 4 is along Figure 3 Sectional view along the midline BB;

[0035] Figure 5 is along Figure 3 Sectional view of the mid-CC line;

[0036] Figure 6 It is a structural schematic diagram highlighting the sand wrapping mechanism;

[0037] Figure 7 It is an exploded view highlighting the sand-wrapping mechanism;

[0038] Figure 8 It is an exploded view that highlights another perspective of the sand-wrapping mechanism;

[0039] Fig. 9 yes Figure 6 An enlarged schematic diagram of part D in the middle;

[0040] Fig.10 It is a structural schematic diagram of the first locking component in a locked state.

[0041] Reference numerals: 1, transfer manipulator; 2, storage mechanism; 21, support bar; 211, slideway; 22, support frame; 23, chain; 231, inner chain plate; 24, mounting member; 25, support seat; 251, roller; 26, support block; 261, support rod; 27, support ring; 271, support hole; 272, notch; 3. Sizing mechanism; 31. Base; 311. Storage chamber; 32. Sizing cylinder; 321. Storage tank; 322. Rotating shaft; 33. Rotating assembly; 331. Mounting seat; 332. Circular shaft; 333. Driving wheel; 334. Driven wheel; 335. Conveyor belt; 336. Driving gear; 337. Driven gear; 338. Rotating motor; 34. Stirring blade; 35. Lifting assembly; 351. Fixed column; 3511. Threaded hole; 3512. Guide groove; 352. Fixed rod; 353. Fixed cylinder; 3531. Fixed groove; 3532 , fixing hole; 3533, guide block; 354, fixing ring block; 355, hand wheel; 356, folding tube; 4, sand wrapping mechanism; 41, installation box; 411, installation slot; 42, filter screen; 43, floating sand box; 431, accommodating hole; 432, first slide slot; 433, second slide slot; 44, air intake assembly; 441, fan; 442, air intake duct; 45, exhaust assembly; 451, first mounting plate; 4511, first mounting hole; 4512, first grid plate; 452, second mounting plate; 4521, second mounting hole; 452 2. Second grid plate; 453. Top plate; 454. First mounting cover; 4541. First exhaust pipe; 455. Second mounting cover; 4551. Second exhaust pipe; 456. Third mounting cover; 4561. Third exhaust pipe; 46. Feed assembly; 461. Tank; 462. Feed pipe; 463. Feed hopper; 464. Valve; 465. Gas filling equipment; 466. Transport pipe; 5. Material blocking mechanism; 51. First baffle; 511. First slider; 512. Slot; 52. Second baffle; 521. Second slider; 53. Vertical displacement Assembly; 531, first operating plate; 5311, first rotating rod; 532, first gear; 533, first bevel gear; 534, first rack; 535, second operating plate; 5351, second rotating rod; 536, second gear; 537, second bevel gear; 538, second rack; 539, operating motor; 54, first locking assembly; 541, first locking plate; 542, first locking strip; 543, first locking block; 55, second locking assembly; 551, second locking plate; 552, second locking strip; 553, second locking block. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-10 This application is described in further detail.

[0043] This embodiment discloses a wax model automatic sand coating device. Figure 1A wax model automatic sand coating device includes a transfer robot 1 arranged on the ground. A storage mechanism 2, a sizing mechanism 3 and a sand coating mechanism 4 are arranged on the ground along the circumference of the transfer robot 1. The transfer robot 1 can transfer the wax model between the storage mechanism 2, the sizing mechanism 3 and the sand coating mechanism 4.

[0044] Reference Figure 1 and Figure 2 The storage mechanism 2 is used for storing and transporting the wax model. The storage mechanism 2 includes a support bar 21, a support frame 22, a chain 23, a driving member and a mounting member 24.

[0045] Reference Figure 1 and Figure 2 The support frame 22 is fixedly connected to the upper end surface of the support bar 21. The head and tail of the support bar 21 are connected, and a slideway 211 is provided on the outer circumferential surface of the support bar 21.

[0046] Reference Figure 1 and Figure 2 The chain 23 is arranged below the support bar 21. The chain 23 extends along the length direction of the support bar 21. The driving member is used to drive the chain 23 to move circumferentially along the support bar 21. The chain 23 includes an inner chain plate 231. The upper end surface of the inner chain plate 231 is fixedly connected to the support seat 25, and the side surface of the support seat 25 is rotatably connected to the roller 251, and the roller 251 is slidably arranged in the slideway 211.

[0047] Reference Figure 2 The end of the inner link plate 231 away from the support rod 261 is fixedly connected to the support block 26, a support ring 27 is arranged below the support block 26, and a support rod 261 is arranged between the support ring 27 and the support block 26 to connect the two. A support hole 271 is provided on the upper end surface of the support ring 27, and a notch 272 is provided on the side of the support ring 27, and the notch 272 is connected to the support hole 271.

[0048] Reference Figure 1 and Figure 2 The mounting member 24 is hung on the support ring 27, and the wax model is arranged below the mounting member 24. After the transfer robot 1 clamps the mounting member 24, the wax model can be transferred.

[0049] Reference Figure 1The end of the transfer robot 1 is connected to a clamping disk, and three groups of clamping assemblies are arranged on the circumferential surface of the clamping disk, and the three groups of clamping parts are distributed in an array around the axis of the clamping disk. The clamping assembly includes a clamping block and a clamping cylinder, and the clamping block is fixedly connected to the outer circumferential surface of the clamping disk. A clamping groove is provided on the end surface of the clamping block away from the axis of the clamping disk. A clamping hole is provided on the inner wall of the clamping groove around the circumference of the clamping disk. The clamping cylinder is fixedly connected to the side wall of the clamping block around the circumference of the clamping disk. The piston rod of the clamping cylinder can be inserted into the clamping groove through the clamping hole. The piston rod of the clamping cylinder cooperates with the clamping block to clamp the mounting member 24.

[0050] Reference Figure 3 and Figure 4 The sizing mechanism 3 is used for sizing the wax model. The sizing mechanism 3 includes a base 31, a sizing cylinder 32, a rotating assembly 33, a stirring blade 34 and a lifting assembly 35.

[0051] Reference Figure 4 and Figure 5 The base 31 is fixedly connected to the ground, and a storage cavity 311 is provided in the base 31. A first circular hole and a second circular hole are provided on the upper end surface of the base 31.

[0052] Reference Figure 1 and Figure 4 The end surface of the sizing cylinder 32 away from the base 31 is provided with a storage groove 321 for storing slurry, and the slurry adopts silica sol. The sizing cylinder 32 is rotatably connected to the base 31, and the lower end surface of the sizing cylinder 32 is fixedly connected with a rotating shaft 322, which is rotatably connected to the first circular hole, and the side of the rotating shaft 322 away from the sizing cylinder 32 is inserted into the storage cavity 311.

[0053] Reference Figure 1 and Figure 5 The rotating assembly 33 is used to drive the sizing cylinder 32 to rotate. The rotating assembly 33 includes a mounting seat 331, a circular shaft 332, a driving wheel 333, a driven wheel 334, a conveyor belt 335, a driving gear 336, a driven gear 337 and a rotating motor 338.

[0054] Reference Figure 1 and Figure 5 The circular shaft 332 is rotatably connected to the second circular hole, and the driven wheel 334 is sleeved on the outside of the circular shaft 332 and is located above the base 31. The driving gear 336 is sleeved on the outside of the circular shaft 332 and is located in the storage chamber 311. The driven gear 337 is sleeved on the outside of the circular shaft 332, and the driven gear 337 is located in the storage chamber 311, and the driven gear 337 and the driving gear 336 are meshed with each other.

[0055] Reference Figure 1 and Figure 5The mounting seat 331 is fixedly connected to the upper end surface of the base 31. The rotating motor 338 is fixedly connected to the side of the mounting seat 331, and the output shaft of the rotating motor 338 is fixedly connected to the driving wheel 333. The driving wheel 333 and the driven wheel 334 are covered with a conveyor belt 335.

[0056] Reference Figure 4 The lifting assembly 35 is used to drive the stirring blade 34 to move up and down. The lifting assembly 35 includes a fixed column 351, a fixed rod 352, a fixed cylinder 353, a fixed ring block 354, a hand wheel 355 and a folding tube 356.

[0057] Reference Figure 4 The fixing column 351 is fixedly connected to the upper end surface of the mounting seat 331. A threaded hole 3511 is provided on the end surface of the fixing column 351 away from the mounting seat 331. A guide groove 3512 is provided on the circumferential surface of the fixing column 351, and the guide groove 3512 penetrates the fixing column 351 in the vertical direction.

[0058] Reference Figure 4 A fixing groove 3531 is provided below the fixing cylinder 353, and the fixing column 351 can be inserted into the fixing groove 3531. A fixing hole 3532 is provided on the upper end surface of the fixing column 351, and the fixing hole 3532 is connected to the fixing groove 3531. A guide block 3533 is fixedly connected inside the fixing groove 3531, and the guide block 3533 is slidably disposed in the guide groove 3512.

[0059] Reference Figure 4 The fixing rod 352 is threadedly connected to the threaded hole 3511 , and the side of the fixing rod 352 away from the mounting seat 331 passes through the fixing hole 3532 and extends out of the fixing tube 353 .

[0060] Reference Figure 6 and Figure 7 The sand wrapping mechanism 4 is used to wrap the surface of the wax mold with sand. The sand wrapping mechanism 4 includes a mounting box 41, a filter screen 42, a floating sand box 43, an air intake assembly 44, an air extraction assembly 45, a feed assembly 46 and a material blocking mechanism 5.

[0061] Reference Figure 7 The installation box 41 is fixedly connected to the ground, and the upper end surface of the installation box 41 is provided with an installation groove 411. The filter screen 42 is fixedly connected to the upper end surface of the installation box 41. The lower end surface of the floating sand box 43 is fixedly connected to the filter screen 42. The upper end surface of the floating sand box 43 is provided with a receiving hole 431.

[0062] Reference Figure 1 and Figure 7The air intake assembly 44 is used to transport air into the installation box 41. The air intake assembly 44 is located at one side of the installation box 41, and the air intake assembly 44 includes a fan 441 and an air intake duct 442. One end of the air intake duct 442 is fixedly connected to the fan 441, and the other end of the air intake duct 442 is fixedly connected to the installation box 41, and the air intake duct 442 is communicated with the accommodating hole 431.

[0063] Reference Figure 1 and Figure 7 The suction assembly 45 is used to absorb the raised sand. The suction assembly 45 includes a first mounting plate 451, a second mounting plate 452, a top plate 453, a first mounting cover 454, a second mounting cover 455, a third mounting cover 456, a first suction pipe 4541, a second suction pipe 4551 and a third suction pipe 4561.

[0064] Reference Figure 1 and Figure 6 The first mounting plate 451 is fixedly connected to the upper end surface of the floating sand box 43, and the first mounting plate 451 is located on the side of the accommodating hole 431 away from the transfer robot 1. The first mounting cover 454 is fixedly connected to the end surface of the first mounting plate 451 away from the axis of the accommodating hole 431. The first mounting plate 451 is provided with a first mounting hole 4511 and a through hole on the side facing the axis of the accommodating hole 431, and the first mounting hole 4511 is connected to the inside of the first mounting cover 454. The first grid plate 4512 is fixedly connected in the first mounting hole 4511. The first exhaust pipe 4541 is connected to the upper end surface of the first mounting cover 454.

[0065] Reference Figure 1 , Figure 6 and Figure 7 The second mounting plate 452 is fixedly connected to the upper end surface of the floating sand box 43, and the second mounting plate 452 is located on the side of the accommodating hole 431 away from the slurrying mechanism 3. The second mounting cover 455 is fixedly connected to the end surface of the second mounting plate 452 away from the axis of the accommodating hole 431. The second mounting plate 452 is provided with a second mounting hole 4521 on the side facing the axis of the accommodating hole 431, and the second mounting hole 4521 is connected to the inside of the second mounting cover 455. A second grid plate 4522 is fixedly connected in the second mounting hole 4521. The second exhaust pipe 4551 is connected to the upper end surface of the second mounting cover 455.

[0066] Reference Figure 6 and Figure 7 The upper end surface of the first mounting plate 451 and the upper end surface of the second mounting plate 452 are fixedly connected to the lower end surface of the top plate 453. The third mounting cover 456 is fixedly connected to the upper end surface of the top plate 453. A third mounting hole is provided on the side of the top plate 453 facing the floating sand box 43. The third exhaust pipe 4561 is connected to the upper end surface of the third mounting cover 456.

[0067] Reference Figure 6 and Figure 7 The first exhaust pipe 4541, the second exhaust pipe 4551 and the third exhaust pipe 4561 can be connected to the same exhaust device, or each can be connected to one exhaust device.

[0068] Reference Figure 1 and Figure 6 The feed assembly 46 is used to transport sand into the floating sand box 43. The feed assembly 46 is arranged on one side of the installation box 41, and the feed assembly 46 includes a tank body 461, a feed pipe 462, a feed hopper 463, a valve 464, an air filling device 465 and a transport pipe 466.

[0069] Reference Figure 1 The tank body 461 is fixedly connected to the ground, and a receiving cavity is provided in the tank body 461. A feed pipe 462 is fixedly connected to the upper end surface of the tank body 461, and a feed hole is provided on the side of the feed pipe 462 away from the tank body 461, and the feed hole is connected to the receiving cavity. A valve 464 is provided on the feed pipe 462, and the valve 464 is a butterfly valve. A feed hopper 463 is fixedly connected to the end surface of the feed pipe 462 away from the tank body 461.

[0070] Reference Figure 1 The gas filling device 465 is arranged on the tank body 461, and the output port of the gas filling device 465 is connected to the tank body 461. One end of the transport pipe 466 is connected to the tank body 461, and the other end of the transport pipe 466 passes through the perforation, so that the outlet end of the transport pipe 466 is located directly above the receiving hole 431.

[0071] Reference Figure 1 The material blocking mechanism 5 is used to block the sand and reduce the sand from flying out of the sand wrapping mechanism 4. The material blocking mechanism 5 includes a first baffle 51, a second baffle 52, a vertical displacement component 53, a first locking component 54 and a second locking component 55.

[0072] Reference Figure 1 , Figure 7 and Figure 8 The floating sand box 43 is provided with a first chute 432 on the side facing the transfer robot 1, and the first chute 432 penetrates the floating sand box 43 in a vertical upward direction. The floating sand box 43 is provided with a second chute 433 on the side facing the sizing mechanism 3, and the second chute 433 penetrates the floating sand box 43 in a vertical upward direction. Both the first chute 432 and the second chute 433 are dovetail groove-shaped.

[0073] Reference Figure 7 and Figure 8The first baffle 51 is vertically slidably disposed on the end surface of the floating sand box 43 facing the transfer robot 1. A slot 512 is provided on the upper end surface of the first baffle 51, and the slot 512 can be inserted into the transfer robot 1. The end surface of the first baffle 51 facing the floating sand box 43 is fixedly connected with a first slider 511, and the first slider 511 is in a dovetail block shape. The first slider 511 is slidably disposed in the first slide groove 432.

[0074] Reference Figure 1 , Figure 7 and Figure 8 The second baffle plate 52 is vertically slidably disposed on the end surface of the floating sand box 43 facing the slurry feeding mechanism 3. The end surface of the second baffle plate 52 facing the floating sand box 43 is fixedly connected with a second slider 521, and the second slider 521 is in a dovetail block shape. The second slider 521 is slidably disposed in the second slide groove 433. One side of the second baffle plate 52 is fixedly connected to the first baffle plate 51.

[0075] Reference Figure 8 and Fig. 9 The vertical displacement assembly 53 is used to drive the first baffle 51 and the second baffle 52 to rise and fall. The vertical displacement assembly 53 includes a first operating plate 531, a first rotating rod 5311, a first gear 532, a first bevel gear 533, a first rack 534, a second operating plate 535, a second rotating rod 5351, a second gear 536, a second bevel gear 537, a second rack 538 and an operating motor 539.

[0076] Reference Figure 8 and Fig. 9 The first rack 534 is fixedly connected to the lower end surface of the first baffle 51 . The second rack 538 is fixedly connected to the lower end surface of the second baffle 52 .

[0077] Reference Figure 1 and Figure 6 The first operating plate 531 is fixedly connected to the upper end surface of the installation box 41. The first operating plate 531 is located on the side of the floating sand box 43 facing the transfer robot 1. The end surface of the first operating plate 531 facing the floating sand box 43 is provided with a first operating hole.

[0078] Reference Figure 6 and Fig. 9 The first rotating rod 5311 is rotatably connected to the first operating hole. The first gear 532 and the first bevel gear 533 are both sleeved outside the first rotating rod 5311, and the first gear 532 is located on the side of the first bevel gear 533 away from the first operating plate 531. The first gear 532 and the first rack 534 are meshed with each other.

[0079] Reference Figure 1 , Figure 6 and Fig. 9The second operating plate 535 is fixedly connected to the upper end surface of the installation box 41. The second operating plate 535 is located on the side of the floating sand box 43 facing the slurrying mechanism 3. The first operating plate 531 is perpendicular to the second operating plate 535, and the first operating plate 531 is fixedly connected to the second operating plate 535. The second operating plate 535 is provided with a second operating hole on the end surface facing the floating sand box 43.

[0080] Reference Figure 6 and Fig. 9 The second rotating rod 5351 is rotatably connected to the second operating hole. The second gear 536 and the second bevel gear 537 are both sleeved outside the second rotating rod 5351, and the second gear 536 is located on the side of the second bevel gear 537 away from the second operating plate 535. The second gear 536 is meshed with the second rack 538. The second bevel gear 537 is meshed with the first bevel gear 533.

[0081] Reference Figure 6 and Fig. 9 , the operating motor 539 adopts a stepper motor or a servo motor. The operating motor 539 is fixedly connected to the side of the first operating plate 531 away from the floating sand box 43, and the output shaft of the operating motor 539 is fixedly connected to the first rotating rod 5311. In other embodiments, the operating motor 539 is fixedly connected to the side of the second operating plate 535 away from the floating sand box 43, and the output shaft of the operating motor 539 is fixedly connected to the second rotating rod 5351; or two operating motors 539 are provided, one first operating plate 531 is fixedly connected to the side of the first operating plate 531 away from the floating sand box 43, and the output shaft of the operating motor 539 is fixedly connected to the first rotating rod 5311, and the other second operating plate 535 is fixedly connected to the side of the first operating plate 531 away from the floating sand box 43, and the output shaft of the operating motor 539 is fixedly connected to the second rotating rod 5351.

[0082] Reference Figure 6 and Fig.10 The first locking assembly 54 is used to lock the first baffle 51 with the top plate 453. The first locking assembly 54 includes a first locking plate 541, a first locking strip 542 and a first locking block 543. The first locking block 543 is fixedly connected to the end surface of the first baffle 51 away from the first mounting plate 451.

[0083] Reference Figure 6 and Fig.10, the first locking plate 541 is rotatably connected to the lower end surface of the top plate 453. The first locking bar 542 is fixedly connected to the side of the first locking plate 541 facing the first mounting plate 451. When the first locking bar 542 and the first locking plate 541 are only subjected to their own gravity, the first locking bar 542 is not on the moving path of the first locking block 543. When the vertical displacement assembly 53 drives the first baffle plate 51 and the first locking block 543 to move to the highest point, the first locking plate 541 rotates toward the first baffle plate 51 to enable the first locking bar 542 to move to just below the first locking block 543.

[0084] Reference Figure 6 and Fig.10 The second locking assembly 55 is used to lock the second baffle 52 with the top plate 453. The second locking assembly 55 includes a second locking plate 551, a second locking bar 552 and a second locking block 553. The second locking block 553 is fixedly connected to the end surface of the second baffle 52 away from the second mounting plate 452.

[0085] Reference Figure 6 and Fig.10 , the second locking plate 551 is rotatably connected to the lower end surface of the top plate 453. The second locking bar 552 is fixedly connected to the side of the second locking plate 551 facing the second mounting plate 452. When the second locking bar 552 and the second locking plate 551 are only subjected to their own gravity, the second locking bar 552 is not on the moving path of the second locking block 553. When the vertical displacement assembly 53 drives the second baffle plate 52 and the second locking block 553 to move to the highest point, the second locking plate 551 rotates toward the first baffle plate 51 to enable the second locking bar 552 to move to the right below the second locking block 553.

[0086] Reference Figure 6 and Fig.10 After the first baffle plate 51 and the second baffle plate 52 move to the highest point, when the vacuum assembly 45 performs the vacuum action, the air above the floating sand box 43 is sucked away, so that low pressure is formed above the floating sand box 43, and the air pressure on the side of the first locking plate 541 close to the first mounting plate 451 is lower than the air pressure on the side of the first locking plate 541 away from the first mounting plate 451. The outside air drives the first locking plate 541 to rotate, so that the first locking bar 542 rotates to the bottom of the first locking block 543, connecting the first baffle plate 51 with the top plate 453; similarly, the second locking block 553 rotates to the bottom of the second locking block 553, connecting the second baffle plate 52 with the top plate 453.

[0087] The implementation principle of the automatic sand coating device for wax models in the embodiment of the present application is as follows: In the first step, the transfer robot 1 clamps the mounting member 24 on the storage mechanism 2, and moves the mounting member 24 and the wax model below to the top of the sizing cylinder 32.

[0088] In the second step, the rotating motor 338 drives the driving wheel 333 to rotate, and the driving wheel 333 drives the driven wheel 334, the circular shaft 332 and the driving gear 336 to rotate through the conveyor belt 335. Since the driving gear 336 is meshed with the driven gear 337, the driving gear 336 drives the driven gear 337 and the sizing cylinder 32 to rotate, so that the stirring blade 34 stirs the slurry in the sizing cylinder 32, and the transfer robot 1 drives the wax mold to descend, so that the wax mold is immersed in the slurry in the sizing cylinder 32, and the slurry on the surface of the wax mold is stirred. Then the transfer robot 1 drives the wax mold to rise and move it above the floating sand box 43.

[0089] The third step is to operate the motor 539 to drive the first rotating rod 5311, the first bevel gear 533 and the first gear 532 to rotate, the first gear 532 drives the first rack 534 and the first baffle 51 to rise, the first bevel gear 533 drives the second bevel gear 537 and the second gear 536 to rotate, the second bevel gear 537 drives the second rack 538 and the second baffle 52 to rise, until the first baffle 51 and the second baffle 52 rise to the highest point; the fan 441 delivers air into the installation box 41 to lift the sand above the filter screen 42, the sand contacts the wax model and adheres to the surface of the wax model, and the vacuum assembly 45 performs the vacuum action to collect the lifted sand.

[0090] The fourth step is to repeat the actions of the second and third steps. After a certain thickness of sand adheres to the surface of the wax model, the transfer robot 1 moves the wax model back to the storage mechanism 2.

[0091] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0092] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present application should be included in the protection scope of the present application.

Claims

1. A wax model automatic sand covering device, Features: The invention comprises a storage mechanism (2) for storing wax models, a sizing mechanism (3) for sizing the wax models, a sand wrapping mechanism (4) for wrapping sand on the surface of the wax models, and a transfer robot (1); the transfer robot (1) is capable of transferring the wax models between the storage mechanism (2), the sizing mechanism (3), and the sand wrapping mechanism (4); the sand wrapping mechanism (4) comprises a mounting box (41) arranged on the ground, a filter screen (42) is arranged above the mounting box (41), a floating sand box (43) for storing sand is arranged on a side of the filter screen (42) away from the mounting box (41), a receiving hole (431) is provided on a side of the floating sand box (43) away from the filter screen (42), an air intake assembly (44) for taking air into the mounting box (41) and a feeding assembly (46) for conveying sand into the floating sand box (43) are arranged on one side of the mounting box (41), and an air extraction assembly (45) is arranged above the floating sand box (43); The air extraction assembly (45) comprises a first mounting plate (451) and a second mounting plate (452) which are arranged above the floating sand box (43); the first mounting plate (451) is located on a side of the accommodating hole (431) away from the transfer robot (1); the second mounting plate (452) is located on a side of the accommodating hole (431) away from the sizing mechanism (3); a first mounting cover (454) is arranged on a side of the first mounting plate (451) away from the axis of the accommodating hole (431); and a first mounting cover (454) is arranged on a side of the first mounting plate (451) facing the axis of the accommodating hole (431). A first mounting hole (4511) communicating with the first mounting cover (454) is provided, and a first exhaust pipe (4541) is provided above the first mounting cover (454); a second mounting cover (455) is provided on the side of the second mounting plate (452) away from the axis of the receiving hole (431), a second mounting hole (4521) communicating with the second mounting cover (455) is provided on the side of the second mounting plate (452) facing the axis of the receiving hole (431), and a second exhaust pipe (4551) is provided above the second mounting cover (455); The floating sand box (43) is provided with a material blocking mechanism (5) for blocking sand, the material blocking mechanism (5) comprising a first baffle (51) provided on the side of the floating sand box (43) facing the transfer robot (1) and a second baffle (52) provided on the side of the floating sand box (43) facing the sizing mechanism (3), the first baffle (51) and the second baffle (52) being fixedly connected, and the installation box (41) is provided with a vertical displacement component (53) for driving the first baffle (51) to rise and fall; The air extraction assembly (45) further comprises a top plate (453) arranged above the first mounting plate (451); the vertical displacement assembly (53) comprises a first rack (534) arranged below the first baffle plate (51), a second rack (538) arranged below the second baffle plate (52), a first operating plate (531) and a second operating plate (535) arranged above the mounting box (41); the first operating plate (531) is perpendicular to the second operating plate (535); the first operating plate (531) is rotatably connected to one side of the floating sand box (43) with a first rotating rod (5311); the first rotating rod (5311) is outer-connected with a a first gear (532) and a first bevel gear (533); the second operating plate (535) is rotatably connected to one side of the floating sand box (43) with a second rotating rod (5351); the second rotating rod (5351) is outer-connected with a second gear (536) and a second bevel gear (537); the first bevel gear (533) and the second bevel gear (537) are meshed with each other; the first gear (532) and the first rack (534) are meshed with each other; the second gear (536) and the second rack (538) are meshed with each other; and the first operating plate (531) is provided with a rotating motor (338) for driving the first rotating rod (5311) to rotate; A first locking plate (541) is rotatably connected below the top plate (453); a first locking strip (542) is provided on the end surface of the first locking plate (541) facing the first mounting plate (451); a first locking block (543) is provided on the side of the first baffle plate (51) away from the first mounting plate (451); when the sand wrapping mechanism (4) is not working, the first locking strip (542) is not on the path of the first locking block (543) moving in the vertical direction; when the first locking block (543) is at the highest point, the first locking plate (541) can rotate to move the first locking strip (542) to the bottom of the first locking block (543).

2. The wax model automatic sand coating device according to claim 1, Features: The feeding assembly (46) comprises a tank body (461) arranged on the ground, a containing cavity is provided in the tank body (461), a feeding pipe (462) is arranged above the tank body (461), a feeding hole communicating with the containing cavity is provided on a side of the feeding pipe (462) away from the tank body (461), a feeding hopper (463) is provided on an end of the feeding pipe (462) away from the tank body (461), a valve (464) for opening and closing the feeding hole is provided on the feeding pipe (462), a gas filling device (465) for filling gas into the tank body (461) is provided on the tank body (461), a transport pipe (466) is provided on the tank body (461), and a through hole for the transport pipe (466) to pass through is provided on the first mounting plate (451).

3. The wax model automatic sand coating device according to claim 1, Features: The sizing mechanism (3) comprises a base (31), a sizing cylinder (32) is rotatably connected to the top of the base (31), and a rotating assembly (33) for driving the sizing cylinder (32) to rotate and a stirring blade (34) inserted into the sizing cylinder (32) are arranged on the base (31).

4. The wax model automatic sand covering device according to claim 3, Features: The base (31) is provided with a storage cavity (311), the upper end surface of the base (31) is provided with a first circular hole and a second circular hole communicating with the storage cavity (311), the end surface of the sizing cylinder (32) facing the base (31) is provided with a rotating shaft (322) inserted into the first circular hole, the rotating assembly (33) comprises a driven gear (337) sleeved on the outside of the rotating shaft (322), a mounting seat (331) arranged above the base (31), and a circular shaft (337) rotatably connected to the second circular hole. 32), the circular shaft (332) is connected to a driven wheel (334) located above the base (31) and a driving gear (336) located in the storage chamber (311), the driving gear (336) and the driven gear (337) are meshed with each other, a rotating motor (338) is arranged on the mounting seat (331), the output shaft of the rotating motor (338) is connected to a driving wheel (333), and a conveyor belt (335) is arranged on the outer sleeves of the driving wheel (333) and the driven wheel (334).

5. The wax model automatic sand covering device according to claim 3, Features: The base (31) is provided with a lifting assembly (35) for driving the stirring blade (34) to move up and down. The lifting assembly (35) comprises a fixing column (351) arranged on the base (31). A threaded hole (3511) is provided on the upper end surface of the fixing column (351). A fixing rod (352) is connected to the threaded hole (3511). A guide groove (3512) is provided on the outer circumferential surface of the fixing column (351). The guide groove (3512) passes through the fixing column (351) in a vertical direction. A fixing cylinder (353) is provided on the outer shell of the fixing column (351). The fixing cylinder (353) is provided with a screw thread. A fixing groove (3531) is provided at the bottom for the fixing column (351) to be inserted, a guide block (3533) is provided on the inner wall of the fixing groove (3531) and is slidably arranged in the guide groove (3512), a fixing hole (3532) is provided on the bottom wall of the fixing groove (3531) for the fixing rod (352) to pass through, a fixing ring block (354) is fixedly connected to the outer circumferential surface of the fixing rod (352) and is capable of abutting against the bottom wall of the fixing groove (3531), the stirring blade (34) is fixedly connected to the outer circumferential surface of the fixing cylinder (353), and a hand wheel (355) is provided on the upper end surface of the fixing rod (352).

6. The wax model automatic sand coating device according to claim 5, Features: The fixed column (351) is provided with a folding tube (356) on its outer sleeve, one side of the folding tube (356) is connected to the base (31), and the other end of the folding tube (356) is connected to the fixed tube (353).

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